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@article{DE_1986_22_1_a6, author = {M. M. Zainulabidov}, title = {The {Bitsadze--Samarski{\v\i}} problem for equations of mixed type}, journal = {Differencialʹnye uravneni\^a}, pages = {54--59}, publisher = {mathdoc}, volume = {22}, number = {1}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1986_22_1_a6/} }
M. M. Zainulabidov. The Bitsadze--Samarski{\v\i} problem for equations of mixed type. Differencialʹnye uravneniâ, Tome 22 (1986) no. 1, pp. 54-59. http://geodesic.mathdoc.fr/item/DE_1986_22_1_a6/